It's actually pretty legit, no credit card info needed...and these aren't "surveys" you fill out. You literally download the app and try them out for a period of time, then gain points to use to purchase apps that would cost money, or use them for Amazon/iTunes/PayPal gift cards.

This has been around for awhile and there are a couple of others like it.

Only downside is to get something like an iPad, it takes about 280,000 points...and I'd say it takes about 20 minutes of downloading and trying apps to get 500-700 points. Do the math there. But if there is an app you want for free, this is definitely an easy free way to get it.